Bulletin de sécurité Red Hat (AV26-803)
Numéro de série : AV26-803 Date : 11 août 2026 En date du 5 août 2026, Red Hat est touché par une vulnérabilité dans le produit suivant : Red Hat Advanced Cluster Management for Kubernetes 2 Le Centre pour la cybersécurité encourage les utilisateurs et les administrateurs à consulter les liens fournis et à installer les mises à jour nécessaires, dès qu'elles sont disponibles. CVE-2026-10090 - Red Hat Customer Portal (en anglais seulement) 2483292 – (CVE-2026-10090) CVE-2026-10090 multicluster-operators-subscription: multicluster-operators-subscription: namespace edit user can deploy cluster-scoped ClusterRoleBinding and become cluster-admin via Application Subscription (en anglais seulement) Security Updates (en anglais seulement)
CSIRTS triage
- What
- A namespace edit user can deploy cluster-scoped ClusterRoleBinding and escalate privileges to cluster-admin via Application Subscription.
- Who is affected
- Red Hat Advanced Cluster Management for Kubernetes 2 deployments with namespace edit users are affected.
- Urgency
- High—privilege escalation allowing unauthorized cluster-admin access.
- Action
- Install security updates from Red Hat for CVE-2026-10090 as soon as they are available.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://cyber.gc.ca/en/alerts-advisories/bulletin-securite-red-hat-av26-803
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-100900.25% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 16% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-10090 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
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